Accessory dwelling unit cost — Knoxville, TN | AccessoryDwellingUnit Solutions

Looking for accessory dwelling unit cost in Knoxville, TN? Call AccessoryDwellingUnit Solutions for a contact a provider — no obligation. Licensed adu builders serve Knoxville and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Building an ADU involves several moving parts that shape your total budget. The biggest factor is whether you choose a prefabricated unit or a custom build on-site. Site preparation is also significant; if your land requires extensive grading, utility trenching, or foundation work, costs will climb. Your choice of finishes—like kitchen cabinetry, flooring, and siding materials—also shifts the bottom line. We help you navigate these variables to find a setup that fits your property. Exact pricing confirmed free on the call.

About this service

Pricing for an ADU is driven by the quality of finishes, the foundation type, and the complexity of your site’s terrain. Projects on flat, accessible lots are generally more affordable than those requiring significant grading or utility trenching. Exact pricing confirmed free on the call.

Frequently asked in Knoxville

What are the disadvantages of ADUs in Knoxville?

How much does an ADU cost in Tennessee?

The cost of an ADU in Tennessee depends heavily on size, materials, and site preparation. Factors like foundation type and utility connections also play a big role. For a precise understanding of costs relevant to Knoxville, getting a personalized quote is essential. This will give you a clear picture for your specific needs.

What are the rules for ADUs in Tennessee?

Tennessee has state-level guidelines, but local ordinances in cities like Knoxville often dictate specific requirements. These can include setback rules, maximum lot coverage, and parking requirements. Understanding these local regulations is key before starting any construction. A consultation can clarify these for your Knoxville location.

Is an ADU allowed in Knoxville?

Also serving nearby: Asheville · Chattanooga · Murfreesboro · Roswell · Sandy Springs

All cities in Tennessee →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

198,162residents

2,007per sq mile

8ZIP codes served

Serving all of Knoxville — population 198,162; about 2,007 residents per square mile across 98.7 sq mi. ZIP codes covered include 37901, 37902, 37909, 37912, 37914, 37915, 37916, 37917.

Neighborhoods served in Knoxville: Downtown Knoxville, Old City, Fort Sanders, Bearden, West Knoxville, South Knoxville — and every surrounding area.